november/december 2020 ieee power & energy magazine 55 Operational Information Communication Server (Two Systems) Power Generation Curtailment Information Renewable Energy Adjustment Control Server (Two Systems) Grid Information Communications Server (Two Systems) Load-Dispatching Information Server (Two Systems) Broadcasting System General Control Office Internet Renewable Energy Power Plant (Higher and Lower Voltages) Acquiring Schedules Intraday: Sending Control Orders Chief Engineer Renewable Energy Power Plant (Extra High Voltage) Renewable Energy Power Plant Previous Day Chief Engineer Schedule Information Communication Server (Two Systems) Automatic Telephone and Email Server (Two Systems) Output Control Information Renewable Energy Adjustment Control Server (Two Systems) Intraday: Confirming Power Generation Output Day-Ahead: Power Generation Curtailment Order Power Distribution Office and So Forth figure 12. The renewable energy management system. (Source: Kyushu EPCO; used with permission.) Monitoring Renewable Energy Power Generation Renewable Energy Power Generation Curtailment Data Renewable Energy Operation Support Servers (Two Systems) Forecast Insolation Data System of the Organization Thermal Power for Cross-Regional Coordination Stations and So Forth of Transmission Operators (Output/Frequency Adjustment Orders) Automatic LoadInterconnection Operation Dispatching Data, Long-Cycle Server Cross-Regional Frequency (Three Systems) Control, Power Source Integration Central-Load-Dispatching Office